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Article: Distinct moiré textures of in-plane electric polarizations for distinguishing moiré origins in homobilayers

TitleDistinct moiré textures of in-plane electric polarizations for distinguishing moiré origins in homobilayers
Authors
Keywordselectric polarization
graphene
hexagonal boron nitride
moiré patterns
van der Waals stacking
Issue Date29-Aug-2023
PublisherSpringer
Citation
SCIENCE CHINA Physics, Mechanics and Astronomy, 2023, v. 66, n. 10 How to Cite?
Abstract

In binary compound 2D insulators/semiconductors such as hexagonal boron nitride (hBN), the different electron affinities of atoms can give rise to out-of-plane electric polarizations across inversion asymmetric van der Waals interface of near 0 & DEG; interlayer twisting. Here we show that at a general stacking order where sliding breaks 2 & pi;/3-rotational symmetry, the interfacial charge redistribution also leads to an in-plane electric polarization, with a magnitude comparable to that of the out-of-plane ones. The effect is demonstrated in hBN bilayers, as well as in biased graphene bilayers with gate-controlled interlayer charge redistributions. In long wavelength moire patterns, the in-plane electric polarizations determined by the local interlayer stacking registries constitute topologically nontrivial spatial textures. We show that these textures can be used to distinguish moire patterns of different origins from twisting, biaxial- and uniaxial-heterostrain, where vector fields of electric polarizations feature Bloch-type merons, Neel-type merons, and anti-merons, respectively. Combinations of twisting and heterostrain can further be exploited for engineering various electric polarization textures including 1D quasiperiodic lattices.


Persistent Identifierhttp://hdl.handle.net/10722/336979
ISSN
2023 Impact Factor: 6.4
2023 SCImago Journal Rankings: 1.165
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYu, HY-
dc.contributor.authorZhou, ZH-
dc.contributor.authorYao, W-
dc.date.accessioned2024-03-06T08:24:46Z-
dc.date.available2024-03-06T08:24:46Z-
dc.date.issued2023-08-29-
dc.identifier.citationSCIENCE CHINA Physics, Mechanics and Astronomy, 2023, v. 66, n. 10-
dc.identifier.issn1674-7348-
dc.identifier.urihttp://hdl.handle.net/10722/336979-
dc.description.abstract<p>In binary compound 2D insulators/semiconductors such as hexagonal boron nitride (hBN), the different electron affinities of atoms can give rise to out-of-plane electric polarizations across inversion asymmetric van der Waals interface of near 0 & DEG; interlayer twisting. Here we show that at a general stacking order where sliding breaks 2 & pi;/3-rotational symmetry, the interfacial charge redistribution also leads to an in-plane electric polarization, with a magnitude comparable to that of the out-of-plane ones. The effect is demonstrated in hBN bilayers, as well as in biased graphene bilayers with gate-controlled interlayer charge redistributions. In long wavelength moire patterns, the in-plane electric polarizations determined by the local interlayer stacking registries constitute topologically nontrivial spatial textures. We show that these textures can be used to distinguish moire patterns of different origins from twisting, biaxial- and uniaxial-heterostrain, where vector fields of electric polarizations feature Bloch-type merons, Neel-type merons, and anti-merons, respectively. Combinations of twisting and heterostrain can further be exploited for engineering various electric polarization textures including 1D quasiperiodic lattices.</p>-
dc.languageeng-
dc.publisherSpringer-
dc.relation.ispartofSCIENCE CHINA Physics, Mechanics and Astronomy-
dc.subjectelectric polarization-
dc.subjectgraphene-
dc.subjecthexagonal boron nitride-
dc.subjectmoiré patterns-
dc.subjectvan der Waals stacking-
dc.titleDistinct moiré textures of in-plane electric polarizations for distinguishing moiré origins in homobilayers-
dc.typeArticle-
dc.description.naturepreprint-
dc.identifier.doi10.1007/s11433-023-2163-3-
dc.identifier.scopuseid_2-s2.0-85169682372-
dc.identifier.volume66-
dc.identifier.issue10-
dc.identifier.eissn1869-1927-
dc.identifier.isiWOS:001058814500001-
dc.publisher.placeBEIJING-
dc.identifier.issnl1869-1927-

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